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Upper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China

Bergstrom, Jan; Zhiqiang, Zhou; Ahlberg, Per LU and Axheimer, Niklas LU (2014) In Estonian Journal of Earth Sciences 63(3). p.123-143
Abstract
Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and 'corynexochid' trilobites, together representing at least ten genera: Serrodiscus, Tannudiscus, Calodiscus, Pagetides, Kootenia, Edelsteinaspis, Ptarmiganoides?, Politinella, Dinesus and Subeia. Eleven species are described, of which seven are identified with previously described taxa and four described under open nomenclature. The composition of the fauna suggests biogeographic affinity with Siberian rather than Gondwanan trilobite faunas, and the Cambrian Series 2 faunas described herein and from... (More)
Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and 'corynexochid' trilobites, together representing at least ten genera: Serrodiscus, Tannudiscus, Calodiscus, Pagetides, Kootenia, Edelsteinaspis, Ptarmiganoides?, Politinella, Dinesus and Subeia. Eleven species are described, of which seven are identified with previously described taxa and four described under open nomenclature. The composition of the fauna suggests biogeographic affinity with Siberian rather than Gondwanan trilobite faunas, and the Cambrian Series 2 faunas described herein and from elsewhere in northwestern China seem to be indicative of the marginal areas of the Siberian palaeocontinent. This suggests that the Middle Tianshan-Beishan Terrane may have been located fairly close to Siberia during middle-late Cambrian Epoch 2. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Trilobita, taxonomy, palaeobiogeography, lower Cambrian, Cambrian Series, 2, Beishan, Gansu Province, China
in
Estonian Journal of Earth Sciences
volume
63
issue
3
pages
123 - 143
publisher
Estonian Academy Publishers
external identifiers
  • wos:000342880400001
  • scopus:84906952565
ISSN
1736-7557
DOI
10.3176/earth.2014.12
language
English
LU publication?
yes
id
faf15d69-ec0a-4e87-9700-aee4326903c0 (old id 4800324)
date added to LUP
2014-11-24 16:15:04
date last changed
2017-01-01 03:32:08
@article{faf15d69-ec0a-4e87-9700-aee4326903c0,
  abstract     = {Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and 'corynexochid' trilobites, together representing at least ten genera: Serrodiscus, Tannudiscus, Calodiscus, Pagetides, Kootenia, Edelsteinaspis, Ptarmiganoides?, Politinella, Dinesus and Subeia. Eleven species are described, of which seven are identified with previously described taxa and four described under open nomenclature. The composition of the fauna suggests biogeographic affinity with Siberian rather than Gondwanan trilobite faunas, and the Cambrian Series 2 faunas described herein and from elsewhere in northwestern China seem to be indicative of the marginal areas of the Siberian palaeocontinent. This suggests that the Middle Tianshan-Beishan Terrane may have been located fairly close to Siberia during middle-late Cambrian Epoch 2.},
  author       = {Bergstrom, Jan and Zhiqiang, Zhou and Ahlberg, Per and Axheimer, Niklas},
  issn         = {1736-7557},
  keyword      = {Trilobita,taxonomy,palaeobiogeography,lower Cambrian,Cambrian Series,2,Beishan,Gansu Province,China},
  language     = {eng},
  number       = {3},
  pages        = {123--143},
  publisher    = {Estonian Academy Publishers},
  series       = {Estonian Journal of Earth Sciences},
  title        = {Upper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China},
  url          = {http://dx.doi.org/10.3176/earth.2014.12},
  volume       = {63},
  year         = {2014},
}